On Pet Sounds, The Beach Boys reached a whole new level in terms of both composition and production, layering tracks upon tracks of vocals and instruments to create a richly symphonic sound. Conventional keyboards and guitars were combined with exotic touches of orchestrated strings, bicycle bells, buzzing organs, harpsichords, flutes, Theremin, Hawaiian-sounding string instruments, Coca-Cola cans, barking dogs, and more. It wouldn't have been a classic without great songs, and this has some of the group's most stunning melodies in tunes like "God Only Knows", "Wouldn't It Be Nice", and "Sloop John B". Pet Sounds has garnered worldwide acclaim from critics and musicians alike, and is widely considered to be one of the most influential albums in music history.